This study was aimed to investigate thecurrent insecticide resistance status in malaria vector mosquitoes from Dogbo district South-western Benin, West Africa. Larvae and pupae of Anopheles gambiae s.l. populations were collected the breeding sites March July 2020 during first rainy season Couffo department using dipping method. WHO susceptibility tests conducted on unfed female aged 2-5 days o...

Effects of knockdown resistance (kdr) were investigated in three pyrethroid-resistant (RR) strains of the Afrotropical mosquito Anopheles gambiae Giles (Diptera: Culicidae): Kou from Burkina Faso, Tola and Yao from Côte d'Ivoire; compared with a standard susceptible (SS) strain from Kisumu, Kenya. The kdr factor was incompletely recessive, conferring 43-fold resistance ratio at LD50 level and 2...

A topical solution containing 65% permethrin (EXspot, Schering-Plough Animal Health Corp., Union, NJ) was evaluated for repellency and insecticidal activity against the phlebotomine sandfly, Phlebotomus perniciosus (Diptera: Psychodidae). Four dogs were sedated and individually exposed to 100 female P. perniciosus inside a cage. Two of the dogs were treated on Day 0 with the permethrin solution...

During an outbreak of the diamondback moth, Plutella xylostella (L.), in California in 1997, nine populations were collected from the major broccoli areas throughout the state. Populations were assayed for their susceptibility to currently used materials (Bacillus thuringiensis subsp. kurstaki, permethrin, and methomyl) and to newer materials that had not yet been commercially used in Californi...

In May 2001 a sample of Culex pipiens pipiens variety molestus Forskål from Marin County, California, collected as larvae and reared to adults, was found to show reduced resmethrin and permethrin knock-down responses in bottle bioassays relative to a standard susceptible Cx. pipiens quinquefasciatus Say colony (CQ1). Larval susceptibility tests, using CQ1 as standard susceptible, indicated that...

Malaria control among nomadic populations has, in the past, posed serious logistic difficulties. Presented in this article are the results of a pilot study in which permethrin was sprayed on the tents of over 26000 nomadic Afghan refugees in an area of Pakistan where seasonal malaria outbreaks occur. In this area Anopheles culicifacies and A. stephensi are the malaria vectors. Population survey...

& 2014 Ame Background: Because of frequent exposure to tick habitats, outdoor workers are at high risk for tick-borne diseases. Adherence to National Institute for Occupational Safety and Health recommended tick bite prevention methods is poor. A factory-based method for permethrin impregnation of clothing that provides long-lasting insecticidal and repellent activity is commercially available,...

Altered immune responses have been observed following occupational, inadvertent, or therapeutic exposure to xenobiotics. Many pesticides are known to cause immunotoxicity. Exposure to mixtures of pesticides, either concurrently or sequentially, may result in potentiating this effect partly because one can effect the metabolism of the other. The objective of this study was to determine the effec...